body {
    margin: 0;
}

body > div {
    background-color: #efefef;
    width: 1400px;
    margin: 0 auto;
}

/*页头背景*/
#t_div {
    background-color: #efefef;
    min-width: 1200px;
    height: 112px;
    background-size: 100% 100%;
    margin: 0 auto;
    position: relative;
}

/*页头登录*/
.my {
    background-color: #efefef;
    margin-top: 10px;
    padding-left: 50px;
}

/*图片和登录上边距*/
#d1 {
    position: relative;
    margin: 0px auto;
    width: 200px;
    top: 60px;
}

#t_div > div > div > img {
    width: 90px;
    height: 60px;
    margin-top: 10px;
    overflow: hidden;
    float: left;
    padding-left: 50px;
}

.pl {
    float: left;
    font-size: 24px;
    color: #4c4c4c;
    margin-top: 24px;
    margin-left: 20px;
}
#span_username{
    display: inline-block;
    width: 300px;
    /*background-color: black;*/
    height: 30px;
    text-align: right;
    color: red;
}
#span_password{
    display: inline-block;
    width: 300px;
    /*background-color: black;*/
    height: 30px;
    text-align: right;
    color: red;
}

/*底层背景*/
#b_div {
    height: 800px;
    background-color: #efefef;
    background-size: 100% 100%;
    margin: 0 auto;
    margin-top: 20px;
}

/*二层背景*/
#b_div > div {
    position: relative;
    top: 50px;
    width: 1100px;
    height: 400px;
    background-color: white;
    margin: 0 auto;
    /*right: 120px;*/
}

/*内容*/
table,tr,td{
    position: relative;
    margin: 0 auto;
    padding-right: 80px;
}
p {
    float: left;
    font-size: 14px;
    color: #4c4c4c;
    margin-left: 210px;
    margin-right: 10px;
    margin-top: 50px;
}

.cl {
    width: 314px;
    height: 40px;
    border: 1px solid #d2d2d2;
    margin-top: 40px;
    margin-left: 60px;
    padding-left: 30px;
    font-size: 20px;
    color: #999;
}
#check{
    position: relative;
    width: 30px;
    height: 30px;
    margin-top: 40px;
}
.lo {
    display: inline-block;
    width: 350px;
    height: 50px;
    background-color: black;
    text-align: center;
    text-decoration: none;
    margin-top: 105px;
    margin-left: 360px;
    color: white;
    font-size: 30px;

}

#reg{
    width: 100px;
    position: relative;
    top: -150px;
    left: 900px;
}

#ag {
    margin-left: 370px;
    margin-right: 10px;
    margin-top: 50px;
    font-size: 40px;
}
.a1{
    display: inline-block;
    float: left;
}